The rooster that belongs to the mountain trolls is feared by the people who live in the valley. And no wonder! For the huge troll-bird often flies out at dusk and carries off animals from the farms.

Ola, Lina, Sina, and Trina are four children who meet the terrible troll-bird in the forest one evening. In spite of their fear, they defeat the bird and provide a merry feast for everyone. 

The story of the troll-bird was one of the d'Aulaire's first picture books, published in 1933 under the title Ola and Blakken. Now, more than forty years later, they have returned to the tale and created an entirely new book. The text has been completely rewritten, and brand-new illustrations—in the robust style of their most recent book, D'Aulaires' Trolls—appear on every page.

An exciting adventure with a reassuring ending, this story for the very young is firmly rooted in the tradition of Norwegian folklore, and in the d'Aulaire's own tradition of superior craftsmanship and story-telling.

From the dust jacket